Concept:A transmission method in which one sender sends data to all devices on the network is called a broadcast.
Explanation:In Figure 5, a single device transmits information.
This information is received by every other device connected to the same network.
Sending data from one source to all possible receivers is known as broadcast transmission.
This differs from unicast, which sends data to one specific receiver, and multicast, which sends data to a selected group.
Therefore, the method shown in Figure 5 is broadcast.
Answer:A. broadcast